000 00286 a2200121 4500
080 _a577.4(063)
_bI 61 P
245 1 _aHuman ecology
_bProceedings:
260 _aSwitzerland
_bGeorgi Publishing Co.
_c1976
650 _aHuman Ecology
100 _a
_d
300 _a868 p.
901 _a131337
999 _c70852
_d70852